Bird feeder



FIG. 1 is a top perspective view of a bird feeder showing the new design in an expanded configuration;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is a top perspective view thereof showing the new design in a collapsed configuration;

FIG. 7 is a bottom perspective view thereof in the collapsed configuration;

FIG. 8 is a top view thereof in the collapsed configuration;

FIG. 9 is a bottom view thereof in the collapsed configuration; and,

FIG. 10 is a side view thereof in the collapsed configuration.

The broken lines in the drawings illustrate portions of the bird feeder that form no part of the claimed design. 

CLAIM The ornamental design for a bird feeder, as shown and described. 